Silica Nanoparticles with Proton Donor and Proton Acceptor Groups: Synthesis and Aggregation

• Published in: SILICON Vol. 3; no. 1; pp. 5 - 12
• Main Authors: Gorbachuk, Vladimir V., Yakimova, Luidmila S., Mostovaya, Olga A., Bizyaev, Dmitry A., Bukharaev, Anastas A., Antipin, Igor S., Konovalov, Alexandr I., Zharov, Ilya, Stoikov, Ivan I.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 2011; Springer Nature B.V
• Subjects: Chemistry; Chemistry and Materials Science; Environmental Chemistry; Functional groups; Hydrogen bonds; Inorganic Chemistry; Lasers; Materials Science; Nanoparticles; Optical Devices; Optics; Original Paper; Photonics; Polymer Sciences; Protons; Silicon dioxide; Synthesis; Aggregation; Nanoparticle; Silica; Colloid
• ISSN: 1876-990X; 1876-9918
• DOI: 10.1007/s12633-011-9077-8

The effects of precursor structure and polycondensation conditions on the properties of hybrid nanoparticles synthesized from organo-trimethoxysilanes were studied. Hybrid nanoparticles containing groups capable of forming hydrogen bonds were synthesized from functional derivatives of 3-aminopropyltrimethoxysilane. For the synthesis of phenylurea-functionalized organosilica nanoparticles different approaches to nanoparticle preparation were used. It was shown that the nature of the functional groups (proton-donor or proton-acceptor) affects the aggregation of silica nanoparticles. Also, the difference in behavior of nanoparticles prepared using surface modification and polycondensation was demonstrated for different pH, ionic strength and solvent polarity. As a result, by changing the pH of the solutions, it is possible to shift the aggregation pattern of these nanoparticles, such as the size of the initially formed aggregates.